Spray gun



FIG. 1 is a front perspective view of the spray gun;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines of portions of the spray gun are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a spray gun, as shown and described. 